EP 3474433 A1 20190424 - ELECTRIC MOTOR DRIVE DEVICE
Title (en)
ELECTRIC MOTOR DRIVE DEVICE
Title (de)
ANTRIEBSVORRICHTUNG FÜR EINEN ELEKTROMOTOR
Title (fr)
DISPOSITIF DE COMMANDE DE MOTEUR ÉLECTRIQUE
Publication
Application
Priority
- JP 2016118434 A 20160615
- JP 2016118435 A 20160615
- JP 2017009162 W 20170308
Abstract (en)
The electric motor drive device (100) includes a smoothing capacitor (4) and an inverter (1), and further includes an overvoltage protection unit (6) for overvoltage protection for the smoothing capacitor (4), and a phase short-circuit control unit (12). The overvoltage protection unit (6) includes: a discharge circuit (20) having a discharge resistor (7) and an IGBT (9) connected in series; and a first determination circuit (21) which determines, with determination delay, that smoothing capacitor voltage exceeds first set voltage, and turns on the IGBT (9). The phase short-circuit control unit (12) is provided in a control device (5) for drive-controlling the inverter (1) and includes a second determination circuit (13) which determines, with a determination period longer than the determination delay of the first determination circuit (21), that smoothing capacitor voltage exceeds second set voltage lower than the first set voltage, to perform phase short-circuit control for the inverter (1).
IPC 8 full level
H02M 7/48 (2007.01)
CPC (source: EP US)
B60L 3/003 (2013.01 - EP US); B60L 3/04 (2013.01 - EP); B60L 3/12 (2013.01 - EP); B60L 50/51 (2019.01 - EP); H02H 7/1222 (2013.01 - EP); H02M 1/32 (2013.01 - EP US); H02M 7/48 (2013.01 - EP US); H02P 27/06 (2013.01 - US); B60L 2240/526 (2013.01 - EP); B60L 2240/527 (2013.01 - EP); B60L 2240/529 (2013.01 - EP); H02H 9/041 (2013.01 - EP); H02M 7/5387 (2013.01 - EP US); Y02T 10/70 (2013.01 - EP)
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
EP 3474433 A1 20190424; EP 3474433 A4 20190731; EP 3474433 B1 20230719; CN 109417355 A 20190301; CN 109417355 B 20201027; JP 6552736 B2 20190731; JP WO2017217036 A1 20181101; US 10541622 B2 20200121; US 2019149063 A1 20190516; WO 2017217036 A1 20171221
DOCDB simple family (application)
EP 17812942 A 20170308; CN 201780035419 A 20170308; JP 2017009162 W 20170308; JP 2018523315 A 20170308; US 201716098209 A 20170308